(Top) Show results of the daily tracking polls, and the actual popular vote (blue). Main pollsters are colored, so that relative bias can be seen. The trend line is a loess smooth through all points.

(Right) The result for each state (blue, red) and polls for each state over the week leading up to the election are shown as a dot plot. From top to bottom, the order of the states is from most Republican to most Democratic.

Median is represented as a black dot, all polls as large white dots, and median of last week’s as a grey dot. Vertical lines mark 5% points difference.

(Bottom) Show the daily tracking results separately for Obama and McCain, and the actual result. Tracking polls low-balled the McCain %.